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This article explains how to create and display heatmaps in a PHP project by integrating the Baidu Map API, covering prerequisite setup, library inclusion, data preparation, heatmap generation using the HeatMap class, and rendering the map with JavaScript on a web page.
This article provides a comprehensive overview of map trajectory technology, covering geographic coordinate systems, map projections, GIS software basics, data formats, GPS data processing, real‑time and historical trajectory analysis, and recent advances such as AI‑driven services and cross‑domain integrations.
This article provides a comprehensive overview of map trajectory technology, covering GIS fundamentals, coordinate systems, data formats, import/export methods, GPS processing, spatial analysis, path‑planning algorithms, real‑time and historical tracking, and recent advances such as AI‑driven services and high‑precision mapping.
This article explains how ByteHouse integrates high‑performance GIS capabilities into its OLAP engine, describes its spatial indexing architecture, showcases benchmark results against ClickHouse, StarRocks, PostGIS and DuckDB using the NYC Taxi dataset, and outlines when to choose ByteHouse versus other spatial database solutions.
The article explains ByteHouse's GIS capabilities, describing its R‑Tree and Google S2 spatial index implementation, OGC‑compatible data types and functions, and presents benchmark results that show ByteHouse outperforming ClickHouse, StarRocks, PostGIS, and DuckDB on key geospatial queries.
This article presents a comprehensive guide to building a digital agriculture visualization dashboard using AMap JSAPI, three.js, GIS tools, and Vue, covering requirement analysis, layer design, data processing, 3D model integration, animation, and interactive features for smart farming applications.
This article demonstrates how to build a web page that leverages AMap's Arrival Range API and Turf.js to calculate reachable areas, compute their intersection, and search for residential communities within the overlap, providing a practical GIS solution for locating optimal rental locations.
This article explains how the ActionDB team extended OceanBase by designing, registering, and implementing the ST_PointN function to extract the N‑th point from geometry objects, covering registration metadata, code integration, algorithm details, and the advantages of a custom GIS function for enterprise databases.
This article introduces twenty data visualization tools—including Excel, CSV/JSON, Google Chart API, Flot, Raphael, D3, Visual.ly, Crossfilter, Tangle, various map libraries, Processing, NodeBox, R, Weka, and Gephi—explaining their features, use cases, and suitability for different skill levels and project requirements.
This tutorial explains how to integrate AMap's vector layer functionality into a PHP web project by setting up the API, creating a map container, initializing the map, and adding point, line, and polygon layers for rich geographic visualizations.
This article demonstrates how to install the TransBigData Python package and use it for preprocessing, grid‑based aggregation, OD extraction, and both static and interactive visualizations of taxi GPS data, showcasing code examples and detailed explanations for each step.
This article introduces the Beidou Grid Code, its theoretical foundation in GeoSOT, detailed hierarchical encoding rules, implementation challenges using MySQL and JPA, and showcases practical urban management applications such as case reporting, hotspot analysis, indoor positioning, and data security.
This article explains the motivation, architecture, and implementation details of a generic map component that supports real‑time heatmap rendering using ThreeJS, covering GIS layer protocols, canvas limitations, WebGL advantages, and code examples for creating radial gradients, instanced meshes, and custom shaders.
This article explains the fundamentals of geodetic and Earth‑centered coordinate systems, their mathematical relationships, and how to convert between geodetic latitude/longitude/height, ECEF, ENU, and Web Mercator coordinates, providing detailed derivations, diagrams, and a C++ implementation example.
This article explains the rapid growth of global spatiotemporal data, the limitations of traditional GIS, and presents SuperMap's distributed storage architecture, unified data access APIs, dynamic rendering techniques, and geographic processing modeling with real‑world case studies to address performance and scalability challenges.
The Eagle.gl Web 3D engine, built atop Three.js, provides a unified 2D/3D GIS platform that efficiently loads, renders, and edits massive point‑cloud, vector, and model map data with real‑time LOD, GPU picking, DEM terrain integration, and configurable styling, supporting AMap’s HD‑map production and future autonomous‑driving simulation.
Mapbox GL JS is an open-source JavaScript library using WebGL for rendering interactive 2D/3D maps, offering advantages over traditional 2D tile-based solutions like Leaflet through vector data support, customizable styles, and efficient data handling via WebGL.
The AMap GIS SDK was engineered to simplify large‑scale smart‑traffic map visualizations by providing a reusable, extensible framework—featuring a MapContainer, configuration controller, source loader, framework adaptation layer, event‑queue mechanism, lifecycle hooks, plugins, instance caching, and multi‑instance isolation—to overcome AMap JSAPI’s development complexity and ensure stable, performant rendering across diverse data sets.
The presentation details the design, implementation, and real‑world applications of the JD Urban Spatio‑Temporal Data Engine (JUST), a distributed, scalable database that handles massive, complex spatio‑temporal data with novel storage, indexing, and query techniques, demonstrating high performance and ease of use across smart‑city scenarios.
This article explains how China's map is represented by three closed polygons, describes the text file format containing longitude‑latitude point groups, and provides a complete PySimpleGUI Python script to read the data and render the map as red polygons.